package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler
    {
        
        /**
         * 捕获业务异常
         *
         * @param ex
         * @return
         */
        @ExceptionHandler
        public Result exceptionHandler(BaseException ex)
            {
                log.error("异常信息：{}", ex.getMessage());
                return Result.error(ex.getMessage());
            }
        
        /**
         * 处理SQL异常
         *
         * @param ex
         * @return
         */
        @ExceptionHandler
        public Result exceptionHandler(SQLIntegrityConstraintViolationException ex)
            {
                //报错信息 Duplicate entry 'LuMingFei' for key 'employee.idx_username'
                String message = ex.getMessage();
                if (message.contains("Duplicate entry"))
                    {
                        String[] split = message.split(" ");
                        String username = split[2];
                        String msg = username + MessageConstant.ALREADY_EXISTS;
                        return Result.error(msg);
                    }
                else
                    return Result.error(MessageConstant.UNKNOWN_ERROR);
            }
    }
